In each case, divide the cost by the weight to find the cost per pound.
The unit rate is dollars per pound.
Sand a: $5/(60 lb) = 0.08333 $/lb
Sand b: $12/(150 lb) = 0.08 $/lb
A. Sand a is 0.08333 $/lb
B. Sand b is $0.08 $/lb
Sand b has a lower unit rate.
Sand b is is the better value.
If you buy the same amount of sand a and sand b, you will spend less money per pound of sand by buying sand b.
Answer:
118
Step-by-step explanation:
you should have learned this in 1st grade
Repeating decimal I think
The slope-point form:
![y-y_1=m(x-x_1)\\\\m=\dfrac{y_2-y_1}{x_2-x_1}](https://tex.z-dn.net/?f=y-y_1%3Dm%28x-x_1%29%5C%5C%5C%5Cm%3D%5Cdfrac%7By_2-y_1%7D%7Bx_2-x_1%7D)
We have two points (4, 5) and (-3, -1). Substitute:
![m=\dfrac{-1-5}{-3-4}=\dfrac{-6}{-7}=\dfrac{6}{7}](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7B-1-5%7D%7B-3-4%7D%3D%5Cdfrac%7B-6%7D%7B-7%7D%3D%5Cdfrac%7B6%7D%7B7%7D)
For point (4, 5):
![y-5=\dfrac{6}{7}(x-4)](https://tex.z-dn.net/?f=y-5%3D%5Cdfrac%7B6%7D%7B7%7D%28x-4%29)
For point (-3, -1):
![y-(-1)=\dfrac{6}{7}(x-(-3))\\\\y+1=\dfrac{6}{7}(x+3)](https://tex.z-dn.net/?f=y-%28-1%29%3D%5Cdfrac%7B6%7D%7B7%7D%28x-%28-3%29%29%5C%5C%5C%5Cy%2B1%3D%5Cdfrac%7B6%7D%7B7%7D%28x%2B3%29)